Method for preparing aqueous emulsion for coating solid pharmace

Details Method for preparing aqueous emulsion for coating solid pharmace Method for preparing aqueous emulsion for coating solid pharmace

1995-04-12

1996-04-30

Brunsman, David

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

106187, 106189, 106203, C09D 714

Patent

active

055120920

ABSTRACT:
A method for preparing an aqueous emulsion for coating solid pharmaceutical preparations comprises the steps of dissolving a cellulosic polymer in a mixed solvent of water and an organic solvent capable of being admixed with water in any rate to give a polymer solution, self-emulsifying the polymer solution by mixing with water and then concentrating the resulting emulsified stock solution. The concentration is carried out by removing a part of the liquid components while passing it through a membrane for ultrafiltration till the polymer concentration of the resulting emulsion reaches a level of not less than 7% by weight.

REFERENCES:
patent: 3556826 (1971-01-01), Gronholz et al.
patent: 4330338 (1982-05-01), Banker
patent: 4385078 (1983-05-01), Onda et al.
patent: 4814015 (1989-03-01), Quinaln
patent: 4968350 (1990-11-01), Bindschaedler et al.

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